View source: R/ECconversion2.R
ECconversion2 | R Documentation |
This function converts electrical conductivity measurements of soil solution to that of soil paste extract. The ratio of soil:water mix for the solution and conversion method must be indicated
ECconversion2(ec, method, extract)
ec |
measured electrical conductivity of the soil solution in dS/m |
method |
method for converting electrical conductivity of the soil:water mix to that of the soil paste extract. The methods included are USDA, landon, kargas, ozkan, hogg, park, visconti, korsandi, shahid, klaustermeier, and he. The default is USDA |
extract |
ratio of soil:water in extract solution for measuring electrical conductivity was measured. Example is 1:1, 1:2, etc. Default is 1:1 |
This function assumes no influence of texture, clay content, etc on the conversion of electrical conductivities
electrical conductivity equivalent for saturated soil extract in dS/m
Models that work with soil solutions in 1:1 soil-water mix are: USDA, landon, kargas, ozkan,hogg, and zhang. Models for 1:2 solutions are: USDA and hogg. Models for 1:2.5 are: ozkan and shahid. landon model also works for 1:3 soil solution. Models for 1:5 are: USDA, landon, kargas, ozkan, chi, park, visconti, korsandi, klaustermeier, and he. The function only works for soil solution mix ratio handled by the respective model.
Christian Thine Omuto
Sonmez S, Buyuktas D, Asri FO. 2008. Assessment of different soil to water ratios (1:1, 1:2.5, 1:5) in soil salinity studies. Geoderma, 144: 361-369
Kargas G, Chatzigiakoumis I, Kollias A, Spiliotis D, Massas I, Kerkides P. 2018. Soil salinity assessment using saturated paste and mass soil:water 1:1 and 1:5 ratios extracts. Water, 10:1589, doi:10.3390/w10111589
ECconversion1
, ECconversion3
, ECconversion4
library(sp)
ECconversion2(0.75, "USDA","1:1")
newmap = suitabinput["ec"]
newmap$salinity=ECconversion2(newmap$ec,"hogg","1:1")
str(newmap$salinity)
spplot(newmap["salinity"])
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.